Portable drier



EAWBQ? 2 sheets-sheet 1l F. H. CUMMER PORTABLE DRIER Filed May 16 Nov. 13 1923.

Nov. 13, 1923. Llg? F. H. CUMMER PORTABLE DRIER Filed May 16. 1921 2 Sheets-Sheet 2 Faq 5;"

intl-@9h97 in) e en ir @virer tyre r l il tirati FREDERICK H. CUMMER, OF GREAT NECK, NEW YORK.

POR-TABLE DRER.

v Application filed May 16, i921. Serial No. 469,796.

To aZZ whom t may concern.'

Be it known that I, Fnnnnnron H. CUM

rana, a citizen of the United States, residing at Great Neck, Long Island, in the county of Nassau andState of New York, have invented certain new and useful Improvements in Portable Driers, of which the following is a specification.

V This invention relates to portable driers such as are used for heating crushed roclr or other materials used in laying roadways or pavements or for other purposes.

The object of the invention is to provide anv improved portable drier which is of simple form; is strong and heavy enough for its intended uses, but without carrying excessive weight; which enables the material to be heated or dried to be fed or charged into the drier without disturbing the circulation or flow of the hot gases; and which is highly eficient in use.

@ther objects of the invention are in part obvious and in part will appear more in detail hereinafter.

ln the drawings Fig. l is a side elevation, partly broken out and in section, ofa drier embodying the invention; Fig. 2 is an end elevation from the left in Fig. l; Fig. 3 is a detail sectional view on the line 3 3, Fig. 2, the operating or driving mechanism being omitted.; and Fig. l is a sectional elevation on the line 4 4, Fig. l.

rlhe drier shown in the drawings comprises a suitable strong and heavy frame l, which may be of any construction and is mounted upon the rear wheels 2 and front wheels 3, which front wheels may be suit ably arranged for steering. At one end of the frame, such as at the rear end, said frame is provided with a depending supporting frame l in which is mounted a driving motor, such as the internal combustion engine 5 arranged to turn a shaft 6 provided with a ily wheel 7 and a sprooxet wheel 3.

The frame also supports a hollow drum or cylinder 9 made of sheet metal provided internally with a plurality, live being shown, of longitudinally extending lifting members or battles l() tormedof channel irons with the webs extending radially, as shown in Fig. 4.

T he axis of the cylinder is inclined downwardly very slightly from the feeding toward thedischarge end, say an inclination of one-eighth of an inch per foot, so that when said cylinder rotates the material therein will be gradually moved toward the discharge end. Cylinder 9 is provided with tracks, such as T rails 1l, extending circumferentially around the saine at or near its opposite ends, said rails resting upon pairs of idle rollers l2 in the frame. One end of the cylinder is provided with driving means such as the ring gear 13 meshing with a pinion le on a short shaft l5 carrying a large ear 1G driven by a pinion 17 -n a second siiaft 18 which is provided with a sprocket wheel 19 from which the chain 2O extends to andvaround the driving sprocket wheel 8, `before referred to.

Suitable means is provided for subjecting the contents of the cylinder to gases for drying or heating the same. As illustrated, the front end of the frame is provided with a heating furnace indicated generally at 2l and comprising a sheet metal jacket lined i with fire briclr, as indicated at 22. In the bottom of the furnace are the grate bars 23 and at one end the tiring door 24. The discharge end of the cylinder projects slightly into the furnace, where it terminates in front of a laterally extending inclined chute or hopper 25 provided'at one side of the machine with a. valve or door 26 actuated by the hand lever 27. One side of the chute or hopper is formed by a transverse wall 28 which is convex at its top, as indicated in Fig, 4:. This wall prevents the material being heated from getting over into the fur nace and also prevents the iire from lowing over into the discharge chute.

The gases from the tire travel rearwardly through the hollow rotating cylinder and out through a stack at the feeding end there of. rlChe stack, indicated at 28, is mounted upon the upper portion of a hollow casing 29, shown in detail in Fig. 3, and is usually hinged thereto, as at 30, to enable it to be turned down into horizontal position when traveling over a roadway. @ne portion of the hollow casing, marked 3l, extends into the open end of the hollow cylinder and be yond the ring gear i3 thereof. The bottom of the casing is provided with a diagonally extending or inclined channel 32 formed by the walls 32a, leading from the feeding opening 33 into the bottom of the cylinder. Casing 29 including the stack and feed chute 32 are mounted upon brackets or supports 34e on the stationary frame.

With this arrangement the crushed rock or other material is dumped into the open end of chute 32 from which it flows into the cylinder. The power engine 5 is driven so as to slowly rotate said cylinder. The material entering the cylinder is lifted by the baffles or lifting plates 10 thereof, carried around in the direction of the arrow A, Fig. Y

el, and when said baffles reach the upper portion of the cylinder the material is allowed to fall. The rotation and inclination of the cylinder cause the material to gradually work its way to the discharge end where it is delivered to the chute or hopper 25 and is taken out as required byy opening the door 26. The hot gases from the furnace travel through the cylinder in a direction opposite to the travel of the road material therein and are discharged through the stack, but the draft through the stack is such that no hot gases come out through the feeding opening 33, but said opening can be left open, if desired.

The drier described is of simple form and is quite efficient for its intended purpose, is

strongand durable, and at the saine time does notl include excessive weight.

a frame and wheels therefor, a rotatingV cylinder inclined downwardly on said-frame toward one `end thereof, a furnace spaced from the lower end of said cylinder to prov-ide a material discharge space between said cylinder and furnace, means at the upper end of said cylinder whereby material mayV be introduced thereinto, and a transverse wall lyingpbetween said furnace and inaterial discharge space to prevent the escape of fire Vfrom said furnace.

In testimony whereof I hereby afi'ix my signature.

FREDERICK H. CUMMER. 

